Supplemental Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory
Raw materials	$ 859	$ 704
Finished goods	1,515	1,518
Total inventory, net	2,374	2,222
Prepaid expenses and other current assets
Taxes	2,693	0
Software licenses and maintenance	1,882	1,307
Compensation and employee benefits	346	0
Rent	288	292
Other	784	853
Total prepaid expenses and other current assets	5,993	2,452
Property and equipment
Total fixed assets, net	10,087	10,628
Total capitalized software, net	5,403	2,465
Total property and equipment, net	15,490	13,093
Accounts payable and accrued expenses
Accounts payable	4,617	3,343
Compensation and employee benefits	3,384	2,137
Professional services	223	309
Taxes	1,664	2,918
Newsstand accruals	140	298
Other accrued expenses	2,392	2,443
Total accounts payable and accrued expenses	12,420	11,448
Leasehold improvements
Property and equipment
Property and equipment, gross	9,921	10,356
Furniture and fixtures
Property and equipment
Property and equipment, gross	1,477	1,456
Computer and office equipment
Property and equipment
Property and equipment, gross	7,324	5,997
Fixed Assets
Property and equipment
Less: accumulated depreciation and amortization	(8,635)	(7,181)
Capitalized software
Property and equipment
Property and equipment, gross	13,523	9,465
Less: accumulated depreciation and amortization	$ (8,120)	$ (7,000)